Climate Insights for Harwich Center

The climate in Harwich Center is temperate. The average annual temperature is 11°C and approximately 1348mm of precipitation falls per year. Harwich Center receives a notable amount of rainfall throughout the year, including during its driest month. Harwich Center is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, September. The coldest months are January, February, March, when temperatures can drop to 0°C. Snowfall occurs from January to December, with around 103cm accumulating over the season.

Temperatures in Harwich Center vary considerably across the year, with a 22°C difference between the coldest and warmest months. August is the warmest month, though highs remain moderate at 22°C with a mean of 21°C. January is the coolest month, with minimum temperatures around 0°C and an average of 2°C. Daily temperature variation is modest, with an average difference of 3°C between highs and lows. The sharpest temperature change occurs between October and November, with a 5°C shift in average temperatures.

Harwich Center is a fairly wet location, receiving approximately 1348mm of precipitation annually, which averages out to around 112mm per month. The wettest month is October, averaging 170mm of rainfall. December and April also tend to see above-average precipitation. The driest month is August, with just 66mm. That's 104mm less than October, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall. Snowfall is a regular feature from January to December, with around 103cm accumulating over the season. March typically sees the most snow at around 32cm.

Harwich Center is relatively calm, with an average annual wind speed of 7km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is January, averaging 8km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 5km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 3km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 8km/h in winter, 7km/h in spring, 5km/h in summer, 7km/h in autumn.

It is currently spring in Harwich Center, which began on March 20, 2026. Harwich Center is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in August at around 22°C, while the coldest stretch bottoms out in January near 0°C. Summer is next, beginning on June 21, 2026 — 4 days from now.

The best time to visit Harwich Center is during June, July and August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 74mm per month. By contrast, January can be quite cold with temperatures dropping to 0°C. Despite being the best months overall, some rain is still likely — pack a waterproof layer and plan a mix of indoor and outdoor activities.

The table below shows monthly climate averages for Harwich Center based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.